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waf/playground/dynamic_headers/wscript

110 lines
2.4 KiB
Python

#! /usr/bin/env python
from waflib import Task, Errors
from waflib.Tools import c
def options(opt):
opt.load('compiler_c')
def configure(conf):
conf.load('compiler_c')
def build(bld):
bld(features = 'c cprogram',
target = 'test',
source = 'src/main.c src/test.c',
includes = 'src')
class mock(Task.Task):
run_str = 'cp ${SRC} ${TGT}'
color = 'BLUE'
# it would be better to replace the scan() method, but this is doable too
def runnable_status(self):
ret = self.runnable_status_dynamic_headers2()
if ret != Task.ASK_LATER and not getattr(self, 'all_mock_done', False):
self.all_mock_done = True # run once
bld = self.generator.bld
add = False
try:
mock_tasks = bld.mock_tasks
except AttributeError:
mock_tasks = bld.mock_tasks = {}
for x in bld.raw_deps[self.uid()]:
if x.startswith('mock_'):
h_file = x[5:]
for k in [self.inputs[0].parent] + self.generator.includes_nodes:
h_node = k.find_node(h_file)
if h_node:
break
if not h_node:
raise Errors.WafError('no header for %s' % x)
m_node = h_node.parent.find_or_declare(x)
try:
tsk = mock_tasks[m_node]
except KeyError:
tsk = mock_tasks[m_node] = self.generator.create_task('mock', [h_node], [m_node])
bld.producer.outstanding.append(tsk)
bld.producer.total += 1
# preprocessor cache :-/
try:
for key in list(bld.cache_nd.keys()):
if key[1] == x:
del bld.cache_nd[key]
except (KeyError, AttributeError):
pass
add = True
self.set_run_after(tsk)
if add:
# recompute the task signature
delattr(self, 'cache_sig')
del bld.imp_sigs[self.uid()]
return self.runnable_status()
for x in bld.node_deps[self.uid()]:
if x.name.startswith('mock_'):
h_node = x.parent.get_src().find_node(x.name[5:])
if not h_node:
raise Errors.WafError('no header for %s' % x.name)
try:
tsk = mock_tasks[x]
except KeyError:
tsk = mock_tasks[x] = self.generator.create_task('mock', [h_node], [x])
bld.producer.outstanding.append(tsk)
bld.producer.total += 1
add = True
self.set_run_after(tsk)
# node get_bld_sig cache :-/
try:
delattr(x, 'cache_sig')
except AttributeError:
pass
if add:
# recompute the task signature
delattr(self, 'cache_sig')
return self.runnable_status()
return ret
c.c.runnable_status_dynamic_headers2 = c.c.runnable_status
c.c.runnable_status = runnable_status